首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Towards the end of June, a unique joint expedition began in the waters near Indonesia. In an area of remarkable marine diversity
Towards the end of June, a unique joint expedition began in the waters near Indonesia. In an area of remarkable marine diversity
admin
2014-12-18
42
问题
Towards the end of June, a unique joint expedition began in the waters near Indonesia. In an area of remarkable marine diversity known as the "Coral Triangle", two vessels set sail: the American Okeanos Explorer and the Indonesian Baruna Jaya IV. Their destination was not over the horizon, but to explore the depths of the ocean.
Jane Lubchenco, administrator of America’s National Oceanic and Atmospheric Administration, says this is the first time that scientists have used a remotely operated vehicle to investigate the cold depths of Indonesia’s Sangihe Talaud region. Their remotely operated vehicle, known as Little Hercules, is working in waters as deep as 3,700 metres(2.3 miles)and as shallow as 250 metres.
By several accounts, the diversity of marine life being discovered is phenomenal. Tim Shank, of the Woods Hole Oceanographic Institution and the lead scientist on the expedition, says the team are discovering levels of large-animal diversity that rival anything found in similar habitats elsewhere on the planet.
Dr. Shank is directing the expedition from a command centre in Jakarta, the Indonesian capital. He says the team have discovered between 30 and 40 new species in the past week of diving alone.
Little Hercules is cruising over hot springs, deep-sea muds and the rocky tops of seamounts—a kind of underwater mountain that rises from the sea floor. A whole different set of corals live down here—and with them come a specialized fauna(动物群). For instance, two chirostylid crabs have been found that live their adult lives only in one particular black coral. Sea stars, crabs, shrimp and worms are found living in the limbs of these corals as birds and insects do in the branches of trees in a rainforest.
What is most intriguing is that the team are gathering evidence for the existence of a deep-ocean "Wallace Line". This is an area named after Alfred Wallace, an evolutionary biologist who noticed in the 19th century that the fauna on either side of this line were distinctly different. The line runs between Borneo and Sulawesi, and through the Lombok Strait near Bah. To the west of the line the animals are Asian and to the east of it the species are a mix of Asian and Australian.
The reason for this line is not entirely understood, says Dr. Shank, but it is thought to be related to the difficulty that species have had in crossing the deepwater under this line. Any confirmation that Wallace’s Line extends to the floor of the deep ocean itself will certainly test ideas about the evolution of the region. The mission continues until the end of August.
The discovery of the two chirostylid crabs is mentioned as an example to illustrate ______.
选项
A、the uniqueness of the fauna
B、the diversity of the corals
C、the relation between the corals and the fauna
D、the similarity between the corals and a rainforest
答案
C
解析
题目提到的The discovery of the two chirostylid crabs是对第5段第3句的概括,该句开头的Forinstance表明该句内容是为了说明上一句,上一句提到了corals和a specialized fauna,因此,第3句是为了举例说明第2句中提到的corals和a specialized fauna的关系。由此可见,本题应选C。
转载请注明原文地址:https://kaotiyun.com/show/Z0m7777K
0
大学英语六级
相关试题推荐
Weallhaveregrets,butnewresearchsuggeststhemostcommonregretamongAmericanadultsinvolvesalostromanticopportunity
Ifyou’rehappyandyouknowit,maybeyoureallyshouldclapyourhands.That’sbecausebeinghappymightmakeyoulivelonger.
A、HowtopreventchildrenfromwatchingTV.B、HowchildrenlikefrighteningTVprograms.C、WhatbadeffectsTVprogramshaveon
OnCrete,NewEvidenceofVeryAncientMarinersEarlyhumans,possiblyevenprehumanancestors,appeartohavebeengoingto
Onelessonofthefinancialcrisisisthis:whentheentirefinancialsystemsuccumbs(屈服)topanic,onlythegovernmentispowerf
A、Hiswatchdistractedhim.B、Healmostmissedthefilm.C、Thefilmfailedtoarousehisinterest.D、Thefilmwastoolatetobe
A、Thequalityoflife.B、Thelocaleconomy.C、Thefriendsandrelatives.D、Thenaturalbeauty.A事实细节题。短文指出,研究发现,选择住处时,生活质量是一个比经济
A、Itsbeautifulboyscycleelegantlybetweenthefamouscanals.B、Itscharmingmalescatchtheheartsoffemaletourists.C、Its
Oneofthemostimportantsocialdevelopmentsthatmadepossibleashiftinthinkingabouttheroleofpubliceducationwasthe
随机试题
患儿,男,7岁,患肾病综合征1年,激素治疗中,病后一直忌盐。近7d发热,咳嗽,面部、下肢浮肿,在外院用速尿静脉注射,出现纳差,恶心、呕吐,体检:精神萎靡,眼睑、双下肢浮肿,血压:12/9kPa,咽充血,扁桃体Ⅱ肿大,心肺无异常。可能的诊断是
属于增感屏结构的是
A.新生儿人数增加,易感人口迁入B.传染病流行后,隐性感染后免疫人口增多C.环境污染D.环境改善E.居民健康意识强
相应于荷载效应标准组合时,作用于基础A顶部的竖向力Fk为400kN/m,水平力Hk为80kN/m,力矩Mk为120kN.m/m,基础及其以上土的重量取120kN/m(按轴心荷载考虑),基础A的宽度为3.6m。试问,相应于荷载效应标准组合时,基础A底面边缘的
财务弹性是用企业的经营现金流量与支付要求进行比较得到反映的,这里的支付要求主要是指企业的实际投资需求,一般不包括承诺支付等或有事项。()
流通市场是针对金融工具的发行与最初购买者之间的交易市场。()
将建筑物的广告位出租给其他单位用于发布广告,应按照“广告服务”税目计缴增值税。()
有一泰国国籍净吨位为1800吨的非机动驳船,停靠在我国某港口装卸货物。驳船负责人已向我国海关领取了吨税执照,在港口停留期限为30天,泰国已与我国签订含有相互给予船舶税费最惠国待遇条款的条约。假定2000吨以下的船舶,30天期的普通税率为2.1元/净吨,优惠
肺部与外界环境间的气体交换称为()
文件IN.DAT中存有200个四位整型数,函数ReadData()负责将IN.DAT中的数滨到数组inBuf[]中。请编写函数findValue(),其功能是:求出满足千位数上的值减百位数上的值减十位数上的值减个位数上的值大于零且此四位数是奇数的数.并按照
最新回复
(
0
)